ArrayIterator::uksort

(PHP 5 >= 5.2.0, PHP 7)

ArrayIterator::uksortSort by keys using a user-defined comparison function

说明

public void ArrayIterator::uksort ( callable $cmp_function )

This method sorts the elements by keys using a user-supplied comparison function.

Note:

If two members compare as equal, their relative order in the sorted array is undefined.

参数

cmp_function

在第一个参数小于,等于或大于第二个参数时,该比较函数必须相应地返回一个小于,等于或大于 0 的整数。

int callback ( mixed $a, mixed $b )

返回值

没有返回值。

参见

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